Northern Provinces of Nigeria (Nigeria). Prisons Dept. (1916). Report on the Prisons Department, Northern Provinces of Nigeria, for the year .. Govt. Printer.
Chicago-referens (17:e uppl.)Northern Provinces of Nigeria (Nigeria). Prisons Dept. Report on the Prisons Department, Northern Provinces of Nigeria, for the Year .. Lagos: Govt. Printer, 1916.
MLA-referens (8:e uppl.)Northern Provinces of Nigeria (Nigeria). Prisons Dept. Report on the Prisons Department, Northern Provinces of Nigeria, for the Year .. Govt. Printer, 1916.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.